astra4936:/usr/src# VBoxManage extpack install Oracle_VM_VirtualBox_Extension_Pack-4.3.12-93733a.vbox-extpack 0%... Progress state: NS_ERROR_FAILURE VBoxManage: error: Failed to install «/usr/src/Oracle_VM_VirtualBox_Extension_Pack-4.3.12-93733a.vbox-extpack» VBoxManage: error: Extension pack 'Oracle VM VirtualBox Extension Pack' is already installed. In case of a reinstallation, please uninstall it first VBoxManage: error: Details: code NS_ERROR_FAILURE (0x80004005), component ExtPackManager, interface IExtPackManager VBoxManage: error: Context: «int handleExtPack(HandlerArg*)» at line 1149 of file VBoxManageMisc.cpp astra4936:/usr/src# VBoxManage extpack install Oracle_VM_VirtualBox_Extension_Pack-4.3.12-93733a.vbox-extpack 0%... Progress state: NS_ERROR_FAILURE VBoxManage: error: Failed to install «/usr/src/Oracle_VM_VirtualBox_Extension_Pack-4.3.12-93733a.vbox-extpack» VBoxManage: error: Extension pack 'Oracle VM VirtualBox Extension Pack' is already installed. In case of a reinstallation, please uninstall it first VBoxManage: error: Details: code NS_ERROR_FAILURE (0x80004005), component ExtPackManager, interface IExtPackManager VBoxManage: error: Context: «int handleExtPack(HandlerArg*)» at line 1149 of file VBoxManageMisc.cpp